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A finite element technique and results of continual fracture process modeling

(KNUCA, 2014) Bazhenov, V.; Pyskunov, S.

The techniques of modeling of continual fracture process for space circular and prismatic bodies under long-term static or cyclic force loading condition and some results of determination of responsible parts lifetime is presented in this paper. The scalar damage parameter is used to describe the material continual fracture process. A stress-strain problem solution made with semianalytic finite element method (SFEM). It‘s shown , that the value of residual lifetime could be differ significantly for different loading condition and object configuration.

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Algorithmization tests development of spatial imagination

(KNUCA, 2015) Honta, Viktoria

In the article it is looked at the method algorithmization of chosen tests for development of spatial imagination, proposed combined algorithm for test of spatial imagination, shown schematic use of auxiliary algorithm. Setting further set of measures.

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Analysis of modified bitumen difference polymers

(KNUCA, 2014) Onischenko, A.; Kuzmіnets, M.; Aksenov, S.

An important step in the preparation of modified bitumen is selection of the composition and verification of various polymers’ effectiveness. Therefore, paddle mixers are widespread in both industrial and laboratory conditions for efficient mixing of bitumen with polymers. The developed method allows to determine the completion time of modification process at various process parameters (temperature, mixing speed and content of the modifier) to complete stabilization of the properties and the homogenization of bitumen. The results of studies showed that optimal time for bitumen modification at wich take place both stabilization of the properties and homogenization, ie astringent take the necessary level of uniformity with latex Butonal NS198, is about 3 hours.

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Analysis of space planning and design decisions modern cottage

(KNUCA, 2014) Klys, M.

This article report analysis of the major space planning and design solutions to contemporary cottages. Also considered the land on which built or being built these cottages. Realized statistical processing of the results. Definitely, a line of research of technical parameters of the device bearing structures cottages. Inspected the 68 modern houses and land plots for them in Kiev and Kiev region. Based on these data the histogram parameters most significantly influence the choice of process parameters erection. The results of analysis are a set of body-planning and design parameters that significantly affect the technological solutions.

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Analysis of the predictive properties of Brown`s model in the extended domain of the internal parameter

(KNUCA, 2015) Romanenkov, Yuriy

The paper analyses the predictive properties of Brown's adaptive model in the extended domain of internal parameters, which relates to the class of problems in parametric synthesis of forecast models, namely: evaluating the stability of model predictive properties to variation of internal parameters by searching for forecast robustness domains. The approach suggested is illustrated by an example.

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Application of generalized "method of lines", for solving problems of thermoelasticity of thick plates

(KNUCA, 2014) Chybiryakov, V.; Stankevich, A.; Levkivskiy, D.; Melnychuk, V.

In this paper, a new combined method of reducing dimensions of spatial thermoelasticity problems was proposed; based on the “method of lines”, combined with Bubnov-Galerkin-Petrov`s projection method which significantly expands its capabilities. The generalized “method of lines” can be used for plates of variable thickness, in problems of dynamics and thermoelasticity. The basic idea is to reduce the dimension of the spatial coordinates using the projection method, with a system of basis functions. This article is the first part of the work. It shows the reduced differential equations and proposes a new way of modeling boundary conditions.

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Application of graph theory in the energy efficient architectural design

(KNUCA, 2015) Bolgarova, Natalia

Energy-efficient house is considered as a structure consisting of individual elements (volumes). To analyze their relationships with the architectural design of objects suggested to use one of the methods section of mathematics – graph theory. There are basic principles of the theory, which can be used to generate functional and spatial structure of the energy-efficientbuilding.

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Assessment of Transport Energy Consumption when Designing Off-Ramps of Flyunder Crossings

(Lira-K, 2016) Таrasiuk, Volodymyr

Dependence between radiuses of curves of off-ramps and transport energy onsumption within left- and right-turning directions of traffic of flyunder crossings with the ngineering and planning solution of “cloverleaf” type with the help of software system PTV VIS-SIM is investigated. Optimum values, from the point of view of minimization of energy onsumption of a transport flow, of their radiuses of curves are defined.

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Calculation of deflection of one- and two-layer slabs supported on four sides

(KNUCA, 2014) Smorkalov, D.

Presented method and results of experimental research of deflection of one-layer and two-layer slabs influenced by short-term lateral load. Proposed method of calculation based on the limit equilibrium method, calculation of slab deflections values by LIRA-CAD bundled software. The comparison of experimental and theoretical results of the calculation of deflections slabs.

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Complex mechanization of structural coverage lifting using setting module

(Lira-K, 2016) Chernenko, Vitalii; Sobko, Yurii

The analysis of complex installation mechanization using adjusting hoisting module (VPVM) has been conducted. Hoisting systems allow basic assembly operations, namely many single-type operations. Namely: installation of structural coverage, verification of adjusted elements and constructions position, final attaching of the constructions. The main task at high size structural coverage lifting is to increase the productivity of installation. Determination of constructional features during installation using adjusting hoisting module (VPVM). The proposed installation enables the lifting due to the fact that the most labor-intensive operations can be automated. Coverage installation according to the way of lifting jack systems ejecting has the major advantage over existing methods of construction – installation can occur while arranging the permanent supporting elements (columns).

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Conditions of small towns’ historic environment formation and development

(Lira-K, 2016) Velichko, Svetlana

To create competent reconstruction projects in historic urban environment it is necessary to carry out pre-project analysis of formation and development conditions and factors of architectural urban environment of a small town’s historical center. Historic environment is viewed as an object of the research, the components of which have been created during a certain historical period of the town’s development. The historical period must be characterized by certain evolutionary development patterns. The aim of the historic urban environment redesign is to preserve the town’s originality in the process of historical center reconstruction. Taking into consideration the results of preconception studies, it is essential to carry out further research of historical center’s values. The article deals with the analysis of the main formation and development conditions of small towns’ historic environment.

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Defining the basic parameters of vibration settings for sealing horizontal surfaces

(KNUCA, 2015) Ruchynskyy, Mykola; Zapryvoda, Andriy

Are examined and defined pattern vibratory motion to form horizontal surfaces on the basis of the account of wave phenomena and bias voltages. Given numerical values screeds and rheological characteristics of sealing concrete. Based on the analysis of the energy balance, motion qualities limits are defined. Analytical dependences for the estimation of main parameters of the effective vibroimpact mode are suggested as well as the motion stability layout of the analyzed system is cited.

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Development of bell type water well with wide gravel filter

(KNUCA, 2015) Kayastha, Krishna

The purpose of this article is to present a new bell type water well construction with a wide gravel filter and its application. The construction of the water well has been developed and research has been conducted using physical and electrical modelling as well as in the practical field. Researches in this work are of analytical and experimental character. As the results of the research, optimal physical parameters of the constructions have been found and analytical − empirical formulae have been derived to calculate hydraulic parameters. Recommendation for application has been presented. The results received in this work can be used for the application of well construction. Further research is required to improve the physical and the hydraulic parameters of the proposed construction. The work has scientific and practical interest.

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Development of Ukraine territory flooding processes; Its parameters and the influence on the environmental safety level

(KNUCA, 2014) Voloshkina, O.; Bereznitska, J.

Shows the present state of development of flooding processes of Ukraine territory. Given filtration stages in the flooding the process of and methods of their calculation. The method of filtration resistance for calculating of the filtering in flooding process is analyzed. Shows the dependence between the development of flooding process and intensifying processes of landslides on Ukraine territory.

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Easement procedure and factors which defined it in Ukraine

(KNUCA, 2015) Lytvynenko, Iryna

In the article various factors defining procedure of a land easement establishment when forming the new land plots are analyzed.All factors are combined into 4 groups. The analysis of influence of each group of factors on a land easement procedure in Ukraine is made.

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Evolution of Reforming of the civil construction industry management system in Ukraine

(KNUCA, 2015) Bronevitski, Sergei

Examined are the problems of the civil construction industry performance. The main shortcomings of the management system scrutinized. The factors had been shaping the Management System of Ukraine Civil Construction Industry revealed. Description is given of elements and mechanisms of management system, advantages and disadvantages “administrative regulation”. Examined are the management technologies of the civil construction industry in the countries of market economy. Examples are given of developing the housing programs in the USA. The summary is given on the mainstream trends in managing the civil construction industry and on areas of optimization of the management system.

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Features of base substantial differential settlements influence on structural system seismic stability

(Lira-K, 2016) Khokhlin, Denys

The problem of possible combination of soil base substantial differential settlements and seismic action is characterized. This theme is extremely urgent subject to significant negative influence of soil base substantial differential settlements evolution on the construction system seismic stability. The article’s aim is to consider features of such influence. The considered spectrum of the influence aspects includes:initiation of a complex stress-strain state, which loads additionally structural system when seismic loads are emerging; reduction of the structural system energy capacity to take and absorb the seismic vibration energy; abatement and rupture of seismic stability elements in the construction system; substantial change of a dynamic analytical model. The version of soil base substantial differential settlements occurrence before earthquake is selected for being studied as the most probable and destructive. Design procedure for construction systems under combination of soil base substantial differential settlements influence and seismic action on the basis of capacity spectrum method proposed by author is shortly introduced.

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Interaction study of the frame building with foundation weakened by the underground mines under the seismic load

(KNUCA, 2014) Sakharov, V.; Zhuk, V.; Skochko, L.

These article describes the researching results of the underground man-triggered cavities’ influence on the stress-strain state of the «soil base – foundation – structure» system elements under the seismic loads using the numerical simulation.

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Intersectional junctions of the main roads in city SRN system (on the basis of Kyiv SRN system)

(KNUCA, 2015) Solukha, Igor

Issues of the concept of the street and road network (SRN), the role and place of transport planning junction in city SRN and the intersectional junctions of main roads at different levels in the SRN system are raised. The tasks of research: consider the concepts of SRN, road junction and main roads intersection at different levels. The technique of research: the typological technique of theoretical analysis for determining the role and the place of junction in the SRN system is implied. The results of research: It was established that intersections are built at different levels for the improvement of the traffic streams of vehicles and reducing the number of conflict points at the main roads junctions. Conclusions: intersectional junctions of the main roads in system of city street and road network is a source of transport and ecological problems of the city.

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Labor skeleton frame as functional and spatial system of city planning and management

(KNUCA, 2015) Svoboda, Daria

Models of work localization places originated in ancient towns and cities of the Renaissance period. Regularities of geometrical dependences are traced in many theories of the cities. An important criterion for the quality of the city planning structure is travel timeweighted average to the main places of work.

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